lab1_2

#include <stdio.h>
#include <math.h>

/* Converting binary number to decimal */

int conv(long bin);

main()
{
    long binary;
    int decimal;

    puts("enter binary number");
    scanf("%ld", &binary);

    printf("%d\n", conv(binary));

    return 0;
}

int conv(long bin)
{
    int i = 0, num, decimal = 0;

    while (bin != 0) {
        num = bin % 10;
        decimal += pow(2,i) * num;
        ++i;
        bin /= 10;
    }

    return decimal;
}